Pressure-regulator for drag-bars.



No. 693,307. Pat ented Fb. H, mm.

4 c. H. PELTON. I PRESSURE REGULATOR FUR DRAG BARS.

(Application filed. Oct. 31. 1901.)"

(No Model.)

IN VEN TOR.

WITNESSES A TTORNE-Y.

UNITED STATES PATENT ()FFICE.

CHARLES H. PELTO or SPRINGFIELD, OHIO.

PRESSURE-REGULATOR FOR DRAG-BARS.

SPECIFICATION forming part of Letters Patent No. 693,307, dated February1 1, 1902. Application filed October 31, 1901. Serial No. j608. (Nomodel.)

To all whom it may concern:

Be it known that 1, CHARLES H. PELTON, a citizen of the United States,residing at Springfield, in the county of Clark and State of Ohio, haveinvented certain new and useful Improvements in Pressure-Regulators forDrag-Bars, of which the following is a specification, reference beinghad therein to the accompanying drawings.

This invention relates to pressure-regulators for the drag-bars ofgrain-drills and the like, and has for its object to provide aconstruction whereby the spring-pressure employed to act on thedrag-bars in order to force the furrowopening devices into the groundmay be readily regulated.

To these ends my invention consists in certain novel features, which Iwill now proceed to describe and will then particularly point them outin the claims.

In the accompanying drawings, Figure 1 is a side elevation, partly insection, of a construction showing my invention applied to agrain-drill. Fig. 2 is an enlarged detail view of thepressure-regulatingdevices proper. Fig. 3 is a rear elevation of whatvisshown in Fig. 2. Figs. 4 and 5 are detail views of the upper abutment orcollar, and Fig. 6 is a perspective View of the lower abutment orcollar.

In the said drawings, 1 indicates the frame of the machine, supported onwheels 2 and having pivoted to it at their forward ends drag-bars 3,which carry furrow-openers 4 of any suitable construction. Thesedrag-bars are raised and lowered by meansof a lever 5, secured to arock-shaft 6, mounted on the frame 1, and provided with arms 7, one foreach drag-bar. Each arm 7 is connected with its drag-bar by means of alink 8, consisting of a flat bar pivoted at its lower end at 9 to thedrag-bar. Upon the link 8 there is mounted, nearits upper end, a slidingcollar or abutment 10, pivotally connected with the arms 7 by means ofstuds 11 and having its upward motion limited by a cotter or othersuitable retaining device 12, which may be inserted through any one of aseries of holes 13 in the link 8. The abutment 10 is provided with adisk-shaped body portion 14:, forming a shoulder, against which bearsthe upper end of a coiled spring 15, surrounding the link or bar 8. Fromthis disk-shaped body there extend downward two'lugs 16, lying onopposite sides of the link 8, the space 17 between them being adapted toreceive and fit upon said link, while the outer portions of said lugsare rounded to. fit within the hollow of the coil of the spring 15, thusserving to properly center said spring, which latter in turn serves tocenter and hold in position the abutment 10, around the lugs 16 of whichitfits. Each link 8 is provided near its lower end with a secondabutment 18, having a disk-shaped body portion provided with anopen-mouthed slot 19, by means of which it may be slipped onto or offfrom the link or bar 8 at any point there of. From this disk-shaped bodythere extends upward a hook comprising a vertical portion 20, atransverse portion 21, and a downwardly-extending portion 22, parallelwith the portion 20. The link or bar 8 is provided at its lower end witha plurality of apertures 23, into anyone of which the hook of the lowerabutment may be introduced. By swinging the lower abutment around theportion 21 as a pivot until the disk-shaped body portion has been drawnclear of the linkthe hook may be so turned as to readily disengage itfrom that one of the apertures 23 in which it is inserted, therebypermitting the said lower abutment to be raised or lowered, as the casemay require, and engage with the aperture 23 which will give it thedesired position.

It will be seen that by means of the lever 5 the pressure exertedthrough the springs 15 on the drag-bars 3 may be varied as desired as toall of said drag-bars. It will also be seen that by adjusting the lowerabutment in the manner above described the pressure of each individualspring may be varied as desired independently of the others. Theconstruction is, moreover, such that the adj u'stable lower abutment forthe spring isv firmly held in position, readily adj ustcd, and not aptto become accidentally detached or lost.

I do not wish to be understood as limiting myself to the precise detailsof construction hereinbefore described, and shown in the accompanyingdrawings, as these details may obviously be modified without departingfrom the principle of my invention.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is-

1. In a pressure-adjusting device for dragbars, the combination, with aframe, dragbars pivoted thereto at their forward ends and provided withfurrow-opening devices, and a rock-shaft mounted on the frame andprovided with an operating-lever and with an arm for each drag-bar, of aconnecting-link pivoted to the drag-bar, an upper abutment mounted toslide on said link and pivotally connected to the corresponding arm ofthe rock-shaft, means on said link for limiting the upward motion ofsaid upper abutment, a coiled spring encircling the link, and hearingagainst the upper abutment at its upper end, and a vertically-adjustablelower abutment on each link, comprising a disk-shaped body having anopen-mouthed slot to fit the link, and a hook-shaped portion extendingupward from said body, said link being provided with a plurality ofapertures, with any one of which said hook-shaped portion may beengaged, substantially as described.

2. In a structure of the character described, the combination, with adrag-bar, a pressuretransmitting link pivoted thereto, and apressure-sprin g coiled around said-link, said link being provided witha plurality of apertures, of an abutment for the lower end of saidspring, comprising a disk-shaped body having an open-mouthed slot, and ahook-shaped portion extending upward from said disk-shaped body andhaving a vertical portion, a horizontal portion, and a downwardprojection on the end of said horizontal portion, substantially asdescribed.

3. In a structure of the character described, an abutment for the upperend of the pressure-spring, comprising a body portion slotted to fit thelink and having formed thereon a shoulder against which the end of thespring abuts, and parallel lugs extending downward from said shoulderand having a slot or space between them to receive and fit upon thelink, the outer surfaces of said lugs being rounded to fit within thecoil of the spring, substantially as described.

In testimony whereof I affix my signature in presence'of two witnesses.

CHARLES II. PELTON.

Witnesses:

E. O. HAGAN, IRVINE MILLER.

